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MW 30x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010056

GTIN/EAN: 5906301810551

5.00
Load capacity 8.71 kg / 85.42 N Magnetic Induction 196.02 mT / 1960 Gs
Diameter Ø
30 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
26.51 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check technical specifications »

6.79 zł net / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Detailed specification - MW 30x5 / N38 - cylindrical magnet

Specification / characteristics - MW 30x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010056
GTIN/EAN 5906301810551
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 30 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 26.51 g
Magnetization Direction ↑ axial
Load capacity ~ ? 8.71 kg / 85.42 N
Magnetic Induction ~ ? 196.02 mT / 1960 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 30x5 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Engineering simulation of the magnet - report

The following values represent the outcome of a physical analysis. Results are based on models for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Please consider these data as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - characteristics
MW 30x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1960 Gs
196.0 mT
 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
 medium risk
1 mm 1890 Gs
189.0 mT
 8.10 kg / 17.86 pounds
8100.7 g / 79.5 N
 medium risk
2 mm 1802 Gs
180.2 mT
 7.37 kg / 16.24 pounds
7366.2 g / 72.3 N
 medium risk
3 mm 1702 Gs
170.2 mT
 6.57 kg / 14.47 pounds
6565.7 g / 64.4 N
 medium risk
5 mm 1479 Gs
147.9 mT
 4.96 kg / 10.93 pounds
4956.4 g / 48.6 N
 medium risk
10 mm 945 Gs
94.5 mT
 2.02 kg / 4.46 pounds
2024.4 g / 19.9 N
 medium risk
15 mm 576 Gs
57.6 mT
 0.75 kg / 1.66 pounds
752.1 g / 7.4 N
 low risk
20 mm 356 Gs
35.6 mT
 0.29 kg / 0.64 pounds
288.1 g / 2.8 N
 low risk
30 mm 153 Gs
15.3 mT
 0.05 kg / 0.12 pounds
53.2 g / 0.5 N
 low risk
50 mm 43 Gs
4.3 mT
 0.00 kg / 0.01 pounds
4.2 g / 0.0 N
 low risk
Magnetic force decreases sharply per each millimeter of distance. Note that even a microscopic distance (e.g., dirt, varnish, rust) strongly weakens the grip. Magnetic products operate optimally at the point of direct contact; gap kills the power. Observe how rapidly the load capacity drop, when the product does not adhere flatly to the steel surface. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Shear hold (vertical surface)
MW 30x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.74 kg / 3.84 pounds
1742.0 g / 17.1 N
1 mm Stal (~0.2) 1.62 kg / 3.57 pounds
1620.0 g / 15.9 N
2 mm Stal (~0.2) 1.47 kg / 3.25 pounds
1474.0 g / 14.5 N
3 mm Stal (~0.2) 1.31 kg / 2.90 pounds
1314.0 g / 12.9 N
5 mm Stal (~0.2) 0.99 kg / 2.19 pounds
992.0 g / 9.7 N
10 mm Stal (~0.2) 0.40 kg / 0.89 pounds
404.0 g / 4.0 N
15 mm Stal (~0.2) 0.15 kg / 0.33 pounds
150.0 g / 1.5 N
20 mm Stal (~0.2) 0.06 kg / 0.13 pounds
58.0 g / 0.6 N
30 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below defines the theoretical force sufficient to cause the downward movement of the magnet downwards along a upright steel wall (assuming standard friction coefficient). The holding force is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 30x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.61 kg / 5.76 pounds
2613.0 g / 25.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.74 kg / 3.84 pounds
1742.0 g / 17.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.87 kg / 1.92 pounds
871.0 g / 8.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.36 kg / 9.60 pounds
4355.0 g / 42.7 N
When placing a holder on a upright surface (e.g., a fridge), it will only hold just approx. 20%-30% of its nominal power. Gravity and a low friction coefficient influence the fact that magnets slide down easier than they pull off. Planning a vertical fastening? Consider that the shear force is much weaker than the maximum static pull force. On a slippery surface, the element will slip down under a much lighter weight. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 30x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.87 kg / 1.92 pounds
871.0 g / 8.5 N
1 mm
25%
 2.18 kg / 4.80 pounds
2177.5 g / 21.4 N
2 mm
50%
 4.36 kg / 9.60 pounds
4355.0 g / 42.7 N
3 mm
75%
 6.53 kg / 14.40 pounds
6532.5 g / 64.1 N
5 mm
100%
 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
10 mm
100%
 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
11 mm
100%
 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
12 mm
100%
 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
A thin metal plate is unable to focus the entire magnetic field, which weakens actual performance of the magnet. Should you install a neodymium to a too thin substrate, the field will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this neodymium's power, you require a sufficiently solid element of metal. The saturation effect means that on sheet metal structures (e.g., car bodies), the magnet works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 30x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 8.71 kg / 19.20 pounds
8710.0 g / 85.4 N
 OK
40 °C -2.2% 8.52 kg / 18.78 pounds
8518.4 g / 83.6 N
 OK
60 °C -4.4% 8.33 kg / 18.36 pounds
8326.8 g / 81.7 N
80 °C -6.6% 8.14 kg / 17.93 pounds
8135.1 g / 79.8 N
100 °C -28.8% 6.20 kg / 13.67 pounds
6201.5 g / 60.8 N
Standard neodymium magnets lose strength after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly damage this product. With increasing heat, the magnet's power briefly decreases. Refrain from using this product in hot environments exceeding its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetism.
*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently under lower heat stress than taller cylinders. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 30x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 16.74 kg / 36.91 pounds
3 437 Gs
2.51 kg / 5.54 pounds
2511 g / 24.6 N
 N/A
1 mm 16.20 kg / 35.71 pounds
3 856 Gs
2.43 kg / 5.36 pounds
2429 g / 23.8 N
 14.58 kg / 32.14 pounds
~0 Gs
2 mm 15.57 kg / 34.33 pounds
3 780 Gs
2.34 kg / 5.15 pounds
2335 g / 22.9 N
 14.01 kg / 30.89 pounds
~0 Gs
3 mm 14.89 kg / 32.82 pounds
3 696 Gs
2.23 kg / 4.92 pounds
2233 g / 21.9 N
 13.40 kg / 29.54 pounds
~0 Gs
5 mm 13.40 kg / 29.54 pounds
3 507 Gs
2.01 kg / 4.43 pounds
2010 g / 19.7 N
 12.06 kg / 26.58 pounds
~0 Gs
10 mm 9.53 kg / 21.00 pounds
2 957 Gs
1.43 kg / 3.15 pounds
1429 g / 14.0 N
 8.57 kg / 18.90 pounds
~0 Gs
20 mm 3.89 kg / 8.58 pounds
1 890 Gs
0.58 kg / 1.29 pounds
584 g / 5.7 N
 3.50 kg / 7.72 pounds
~0 Gs
50 mm 0.23 kg / 0.50 pounds
458 Gs
0.03 kg / 0.08 pounds
34 g / 0.3 N
 0.21 kg / 0.45 pounds
~0 Gs
60 mm 0.10 kg / 0.23 pounds
307 Gs
0.02 kg / 0.03 pounds
15 g / 0.2 N
 0.09 kg / 0.20 pounds
~0 Gs
70 mm 0.05 kg / 0.11 pounds
213 Gs
0.01 kg / 0.02 pounds
7 g / 0.1 N
 0.04 kg / 0.10 pounds
~0 Gs
80 mm 0.03 kg / 0.06 pounds
153 Gs
0.00 kg / 0.01 pounds
4 g / 0.0 N
 0.02 kg / 0.05 pounds
~0 Gs
90 mm 0.01 kg / 0.03 pounds
113 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.03 pounds
~0 Gs
100 mm 0.01 kg / 0.02 pounds
86 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets attract each other from a significantly greater distance than a magnet and sheet setup. Such a system of two magnets generates a stronger field and a further horizon of operation. Designing a strong closure? Apply two magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Figures refer to friction force of a pair of same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MW 30x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 11.0 cm
Hearing aid 10 Gs (1.0 mT) 8.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 5.5 cm
Remote 50 Gs (5.0 mT) 5.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation is a real danger to IT equipment as well as medical implants. These neodymiums produce a flux that prevents correct functioning of digital equipment. Notice: the invisible magnetic field acts through matter and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 30x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.18 km/h
(6.16 m/s)
 0.50 J
30 mm 24.28 km/h
(6.75 m/s)
 0.60 J
50 mm 24.35 km/h
(6.76 m/s)
 0.61 J
100 mm 24.36 km/h
(6.77 m/s)
 0.61 J
Neodymium magnets are prone to chipping – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can trigger coating fragments or injury to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when handling with powerful specimens.

Table 9: Surface protection spec
MW 30x5 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 30x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 16 658 Mx 166.6 µWb
Pc Coefficient 0.25 Low (Flat)
Total magnetic flux emitted by the pole surface. Essential parameter for generator designers as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Submerged application
MW 30x5 / N38

Environment Effective steel pull Effect
Air (land) 8.71 kg Standard
Water (riverbed) 9.97 kg
(+1.26 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Temperature resistance

*For standard magnets, the max working temp is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.25

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Material specification

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010056-2026
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The presented product is a very strong cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø30x5 mm, guarantees the highest energy density. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 8.71 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 85.42 N with a weight of only 26.51 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 30.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø30x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 30 mm and height 5 mm. The key parameter here is the lifting capacity amounting to approximately 8.71 kg (force ~85.42 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths and weaknesses of rare earth magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose magnetism, even over nearly ten years – the drop in power is only ~1% (according to tests),
  • They retain their magnetic properties even under strong external field,
  • The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnetic induction on the working layer of the magnet turns out to be strong,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to modularity in shaping and the capacity to adapt to complex applications,
  • Versatile presence in modern technologies – they find application in magnetic memories, electric motors, medical devices, as well as industrial machines.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited ability of creating nuts in the magnet and complicated forms - recommended is casing - magnet mounting.
  • Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

The specified lifting capacity represents the limit force, measured under laboratory conditions, namely:
  • on a base made of structural steel, perfectly concentrating the magnetic flux
  • with a thickness of at least 10 mm
  • with an ground touching surface
  • without any air gap between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Practical aspects of lifting capacity – factors

Bear in mind that the magnet holding will differ influenced by the following factors, in order of importance:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Material type – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
  • Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.

Precautions when working with neodymium magnets
Conscious usage

Use magnets consciously. Their huge power can surprise even professionals. Stay alert and do not underestimate their power.

Combustion hazard

Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Phone sensors

A powerful magnetic field disrupts the operation of compasses in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Thermal limits

Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and pulling force.

Nickel allergy

It is widely known that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from touching magnets with bare hands or choose coated magnets.

ICD Warning

For implant holders: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Crushing risk

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Choking Hazard

Strictly store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are life-threatening.

Risk of cracking

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Threat to electronics

Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Danger! Learn more about risks in the article: Magnet Safety Guide.